This depends on your TV. In most cases it will put your TV into standby mode

The best way to answer this is to test the TV as follows.
Without the Belkin Wemo Switch connected if you connect the TV to the power socket. Does it go into standby or does it power on. If it goes into standby mode, then that is exactly what the Belkin Wemo Switch will do. If it powers on, then that is exactly what the Belkin Wemo switch will do.

The Belkin Wemo switch cuts off the power supply and initiates the power supply back to the device either through its motion sensor or Wemo App.

It's the 3 pin 240v version (just the wrong photo) They are amazing units and easy to set up. They don't mention that you can also control via SMS & email &......
The list is endless. Got mine to control the boiler, far better than a timer